Nervous System
Neurons Function
send signals, or messages, all over your body which travels between your brain, skin, organs, glands and muscles.
Central nervous system (CNS)
Your brain and spinal cord make up your CNS. Your brain uses your nerves to send messages to the rest of your body. Each nerve has a protective outer layer called myelin. Myelin insulates the nerve and helps the messages get through.
nervous system
Your nervous system guides almost everything you do, think, say or feel. It controls complicated processes like movement, thought and memory. It also plays an essential role in the things your body does without thinking, such as breathing, blushing and blinking.
Peripheral nervous system
Your peripheral nervous system consists of many nerves that branch out from your CNS all over your body. This system relays information from your brain and spinal cord to your organs, arms, legs, fingers and toes.
Nerves Function
carry that data to and from your brain
Interneurons
connect motor neurons to other motor neurons and sensory neurons to other sensory neurons
Autonomic nervous system (Peripheral)
controls the activities you do without thinking about them
Somatic nervous system (Peripheral)
guides your voluntary movements
Messages Function
help you move your limbs and feel sensations, such as pain. Your eyes, ears, tongue, nose and the nerves all over your body take in information about your environment.
Sensory neurons
take information from your senses and send signals to your brain
Motor neurons
tell your muscles to move